Innospec (IOSP) Short Interest Ratio & Short Volume $78.60 -0.69 (-0.87%) Closing price 09/24/2025 04:00 PM EasternExtended Trading$78.61 +0.02 (+0.02%) As of 07:09 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Innospec Short Interest DataInnospec (IOSP) has a short interest of 315,200 shares, representing 1.29% of the float (the number of shares available for trading by the public). This marks a -27.61% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1.5, indicating that it would take 1.5 days of the average trading volume of 197,006 shares to cover all short positions.Current Short Interest315,200 sharesPrevious Short Interest435,400 sharesChange Vs. Previous Month-27.61%Dollar Volume Sold Short$27.61 millionShort Interest Ratio1.5 Days to CoverLast Record DateAugust 31, 2025Outstanding Shares24,830,000 sharesFloat Size24,480,000 sharesShort Percent of Float1.29%Today's Trading Volume156,793 sharesAverage Trading Volume197,006 sharesToday's Volume Vs. Average80% Short Selling Innospec? Sign up to receive the latest short interest report for Innospec and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIOSP Short Interest Over TimeIOSP Days to Cover Over TimeIOSP Percentage of Float Shorted Over Time Innospec Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/31/2025315,200 shares $27.61 million -27.6%1.3%1.5 $87.59 8/15/2025435,400 shares $36.11 million +35.3%1.8%2.1 $82.94 7/31/2025321,800 shares $25.71 million +23.3%1.3%1.5 $79.90 7/15/2025260,900 shares $22.20 million -29.9%1.1%1.3 $85.08 6/30/2025372,300 shares $31.31 million +103.2%1.5%1.8 $84.09 6/15/2025183,200 shares $15.53 million -27.9%0.7%0.9 $84.77 5/31/2025253,900 shares $21.67 million +5.6%1.0%1.1 $85.33 5/15/2025240,500 shares $21.23 million -18.0%1.0%1 $88.27 4/30/2025293,100 shares $26.23 million -11.6%1.2%1.3 $89.48 4/15/2025331,500 shares $28.92 million -13.5%1.3%1.5 $87.23 Get the Latest News and Ratings for IOSP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Innospec and its competitors with MarketBeat's FREE daily newsletter. 3/31/2025383,000 shares $36.29 million -16.5%1.6%1.8 $94.75 3/15/2025458,800 shares $45.00 million +52.8%1.9%2.2 $98.09 2/28/2025300,200 shares $31.04 million +14.5%1.2%2 $103.41 2/15/2025262,100 shares $28.36 million -9.3%1.1%1.9 $108.19 1/31/2025289,000 shares $32.76 million -10.8%1.2%2.2 $113.35 1/15/2025324,000 shares $36.63 million -15.6%1.3%2.7 $113.06 12/31/2024384,000 shares $42.26 million +28.1%1.6%3.3 $110.06 12/15/2024299,800 shares $34.73 million +7.5%1.2%2.6 $115.86 11/30/2024278,900 shares $33.08 million +28.2%1.1%2.7 $118.61 11/15/2024217,500 shares $25.89 million -3.9%0.9%1.9 $119.03 10/31/2024226,400 shares $24.40 million -12.3%0.9%1.9 $107.78 10/15/2024258,100 shares $29.49 million +3.1%1.1%2.1 $114.27 9/30/2024250,400 shares $28.32 million -14.7%1.0%1.9 $113.09 9/15/2024293,400 shares $31.97 million -20.3%1.2%2.2 $108.96 8/31/2024368,200 shares $42.44 million +43.0%1.5%2.7 $115.26 8/15/2024257,500 shares $28.14 million +16.0%1.1%2 $109.28 7/31/2024221,900 shares $29.10 million +5.9%0.9%1.7 $131.14 7/15/2024209,600 shares $26.31 million +8.2%0.9%1.8 $125.51 6/30/2024193,800 shares $23.95 million +14.5%0.8%1.8 $123.59 6/15/2024169,300 shares $20.81 million -16.2%0.7%1.6 $122.91 5/31/2024202,000 shares $26.42 million +16.8%0.8%2 $130.80 5/15/2024173,000 shares $22.76 million -9.2%0.7%1.9 $131.58 4/30/2024190,500 shares $22.86 million -14.2%0.8%2.2 $120.00 4/15/2024221,900 shares $27.03 million +1.4%0.9%2.6 $121.79 3/31/2024218,800 shares $28.21 million -20.1%0.9%2.4 $128.94 3/15/2024273,800 shares $33.42 million +21.1%1.1%3 $122.07 2/29/2024226,100 shares $28.10 million -2.8%0.9%2.4 $124.27 2/15/2024232,500 shares $29.22 million -1.2%1.0%2.5 $125.66 1/31/2024235,200 shares $27.31 million +34.6%1.0%2.6 $116.11 1/15/2024174,700 shares $20.48 million -17.4%0.7%2 $117.23 12/31/2023211,600 shares $26.08 million -10.3%0.9%2.5 $123.24 12/15/2023236,000 shares $28.29 million +58.1%1.0%3 $119.87 11/30/2023149,300 shares $15.69 million +7.1%0.6%2 $105.07 11/15/2023139,400 shares $15.23 million -7.4%0.6%1.8 $109.26 10/31/2023150,600 shares $14.76 million +20.5%0.6%2 $98.00 10/15/2023125,000 shares $12.34 million -3.0%0.5%1.6 $98.74 9/30/2023128,800 shares $13.16 million -22.1%0.5%1.6 $102.20 9/15/2023165,400 shares $17.67 million +14.1%0.7%2.1 $106.84 8/31/2023145,000 shares $15.58 million +2.2%0.6%1.9 $107.42 8/15/2023141,900 shares $14.90 million -5.3%0.6%1.8 $105.03 7/31/2023149,900 shares $16.06 million -7.1%0.6%2 $107.14 7/15/2023161,300 shares $16.33 million +21.0%0.7%2.1 $101.22 6/30/2023133,300 shares $13.39 million -24.5%0.5%1.7 $100.44 6/15/2023176,500 shares $17.81 million -3.8%0.7%2 $100.89 5/31/2023183,500 shares $16.95 million -8.3%0.8%2 $92.36 5/15/2023200,000 shares $19.49 million No Change0.8%2 $97.45 10/31/2022316,100 shares $31.61 million -20.6%1.3%3.7 $99.99 10/15/2022398,200 shares $35.59 million +10.7%1.6%4.8 $89.37 9/30/2022359,700 shares $30.82 million +6.8%1.5%4.3 $85.67 9/15/2022336,800 shares $29.20 million +1.4%1.4%3.8 $86.70 8/31/2022332,200 shares $31.05 million No Change1.4%3.7 $93.46 8/15/2022332,200 shares $32.98 million -6.5%1.4%3.6 $99.27 7/31/2022355,100 shares $36.22 million +1.2%1.5%3.4 $102.00 7/15/2022350,800 shares $32.70 million +10.1%1.4%3.2 $93.22 6/30/2022318,700 shares $30.53 million -4.7%1.3%3 $95.79 6/15/2022334,300 shares $31.55 million -3.9%1.4%3.1 $94.39 5/31/2022347,800 shares $35.49 million +12.5%1.4%3.7 $102.03 5/15/2022309,300 shares $31.39 million +13.2%1.3%3.2 $101.49 4/30/2022273,300 shares $26.05 million +10.9%1.1%3.2 $95.31 4/15/2022246,400 shares $23.12 million -12.1%1.0%3 $93.83 3/31/2022280,400 shares $25.95 million -16.8%N/A0 $92.55 3/15/2022337,200 shares $30.77 million +7.3%1.4%3.8 $91.24 2/28/2022314,300 shares $30.02 million +8.1%1.3%2.8 $95.50 2/15/2022290,800 shares $27.31 million +25.6%1.2%2.6 $93.93 1/31/2022231,500 shares $21.52 million -0.1%1.0%1.9 $92.96 1/15/2022231,700 shares $22.84 million +8.4%N/A0 $98.56 12/31/2021213,700 shares $19.31 million -27.4%0.9%1.7 $90.34 12/15/2021294,500 shares $26.89 million +28.2%1.2%2.3 $91.30 11/30/2021229,800 shares $18.66 million +25.9%0.9%2.1 $81.20 11/15/2021182,600 shares $16.80 million -52.8%0.8%1.7 $92.02 10/29/2021387,000 shares $35.07 million +5.1%1.6%4 $90.61 10/15/2021368,200 shares $31.55 million +0.8%1.5%3.6 $85.70 9/30/2021365,200 shares $30.76 million +2.1%1.5%3.6 $84.22 9/15/2021357,600 shares $31.04 million -7.6%1.5%3.2 $86.80 8/31/2021387,200 shares $36.24 million +2.4%1.6%3.7 $93.60 8/13/2021378,200 shares $35.58 million +36.1%1.6%3.5 $94.08 7/30/2021277,800 shares $24.57 million -6.5%1.1%2.5 $88.45 7/15/2021297,100 shares $26.82 million +45.4%1.2%2.9 $90.27 6/30/2021204,300 shares $18.51 million -33.2%0.8%1.9 $90.61 6/15/2021305,800 shares $29.67 million -6.1%1.3%3.3 $97.03 5/28/2021325,700 shares $32.93 million +23.1%1.3%3.5 $101.11 5/14/2021264,500 shares $26.87 million +14.1%1.1%2.8 $101.60 4/30/2021231,900 shares $22.98 million -16.3%1.0%2.5 $99.10 4/15/2021277,000 shares $28.76 million -1.5%N/A0 $103.83 3/31/2021281,100 shares $28.79 million +0.9%N/A3 $102.41 3/15/2021278,700 shares $29.38 million -9.8%N/A2.7 $105.42 2/26/2021309,000 shares $31.50 million +3.7%1.3%2.9 $101.95 2/12/2021298,000 shares $29.79 million -7.2%1.2%2.7 $99.95 1/29/2021321,100 shares $29.38 million -11.0%1.3%2.7 $91.49 1/15/2021360,600 shares $36.00 million -20.9%1.5%3 $99.82 12/31/2020455,800 shares $41.15 million +35.6%1.9%3.8 $90.27 12/15/2020336,200 shares $28.62 million -4.8%1.4%2.7 $85.13 11/30/2020353,100 shares $30.17 million +31.2%1.5%2.8 $85.43 11/15/2020269,200 shares $21.48 million -17.8%1.1%2.3 $79.81 10/30/2020327,300 shares $21.36 million 0.0%1.4%2.9 $65.25 10/15/2020327,400 shares $22.16 million +24.9%1.4%3 $67.70 9/30/2020262,100 shares $16.60 million -4.5%1.1%2.5 $63.32 IOSP Short Interest - Frequently Asked Questions What is Innospec's current short interest? Short interest is the volume of Innospec shares that have been sold short but have not yet been closed out or covered. As of August 31st, investors have sold 315,200 shares of IOSP short. 1.29% of Innospec's shares are currently sold short. Learn More on Innospec's current short interest. What is a good short interest ratio for Innospec? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. IOSP shares currently have a short interest ratio of 2.0. Learn More on Innospec's short interest ratio. What is a good short interest percentage for Innospec? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 1.29% of Innospec's floating shares are currently sold short. Is Innospec's short interest increasing or decreasing? Innospec saw a drop in short interest in the month of August. As of August 31st, there was short interest totaling 315,200 shares, a drop of 27.6% from the previous total of 435,400 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. What is Innospec's float size? Innospec currently has issued a total of 24,830,000 shares. Some of Innospec's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Innospec currently has a public float of 24,480,000 shares. How does Innospec's short interest compare to its competitors? 1.29% of Innospec's shares are currently sold short. Here is how the short interest of companies compare to Innospec: First Financial Bancorp. (2.18%), International Bancshares Corporation (1.59%), United Bankshares, Inc. (2.34%), Avient Corporation (1.53%), Cabot Corporation (5.66%), F.N.B. Corporation (2.64%), H. B. Fuller Company (2.57%), Kennametal Inc. (4.74%), Minerals Technologies Inc. (1.60%), Stepan Company (1.68%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($73.23 billion), Invesco QQQ ($29.52 billion), iShares Russell 2000 ETF ($20.82 billion), iShares 20+ Year Treasury Bond ETF ($10.76 billion), Palo Alto Networks, Inc. ($9.37 billion), Strategy Inc ($7.58 billion), Invesco S&P 500 Equal Weight ETF ($6.78 billion), SPDR S&P Biotech ETF ($6.72 billion), AppLovin Corporation ($6.37 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($6.29 billion). View all of the most shorted stocks. What does it mean to sell short Innospec stock? Short selling IOSP is an investing strategy that aims to generate trading profit from Innospec as its price is falling. IOSP shares are trading down $0.69 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Innospec? A short squeeze for Innospec occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of IOSP, which in turn drives the price of the stock up even further. How often is Innospec's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including IOSP, twice per month. The most recent reporting period available is August, 31 2025. More Short Interest Resources from MarketBeat Related Companies FFBC Short Interest Data IBOC Short Interest Data UBSI Short Interest Data AVNT Short Interest Data CBT Short Interest Data FNB Short Interest Data FUL Short Interest Data KMT Short Interest Data MTX Short Interest Data SCL Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:IOSP) was last updated on 9/25/2025 by MarketBeat.com Staff From Our PartnersTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredStunning new initiative unfolding in the White House?what I just learned about what’s unfolding in the White House is truly stunning… And you need to see it for...Paradigm Press | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredREVEALED FREE: Our top 3 stocks to own in 2025 and beyondEvery time Weiss Ratings flashed green like this, the average gain on each and every stock has been 303% (incl...Weiss Ratings | SponsoredWarren Buffett’s #1 AI Stock: Not Mag 7, And NOT on the NasdaqNew Amazon Crisis Could Tank U.S. Stock Market A new panic is halting AI projects at Amazon and could split...Altimetry | SponsoredForget Tesla — This Tiny AI Stock Is Musk’s Real PlayWhile Wall Street focused on Tesla’s earnings, Elon Musk was quietly building a supercomputer so powerful it c...Behind the Markets | SponsoredElon’s Secret Social Security BombshellTo All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social S...Banyan Hill Publishing | SponsoredCrypto Gets Official Government Backing—Here's the WinnerTrump Just Signed the GENIUS Act—One Coin is About to Explode We're at the BEGINNING of smart money really ...Crypto 101 Media | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. 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